[ MODS: Please delete, problem resolved]
Upgrading firmware reset Profilux to factor settings. It was unclear me to that I used the same "transmit from file to Profilux" for both the settings and sensor files. Given there were 2 copy commands, I expected 2 restore commands. 'Sensor data' also confused me, because it's not the sensor data but rather 'Sensor settings' or 'Sensor configuration' we save + restore.
Cheers, Michael